Microevolutionary processes in the creation of the Siberian species of carp

Elena Pishchenko,Dmitrii Kropachev,Liubov Vesnina,Liudmila Zakonova,Irina Moruzi,D Rudoy,N Ugrekhelidze,A Olshevskaya

doi:10.1051/e3sconf/202127303006

Elena Pishchenko, Dmitrii Kropachev + Show 6 more

Open Access

https://doi.org/10.1051/e3sconf/202127303006

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Abstract

Selection of carp was started in 1964 in Siberia. The work was carried out in a continental climate. The duration of the winter period was 120-130 days. The species was created by the method of mass directed selection in terms of body growth, girth and fecundity. In comparison with the original population, the body weight of females in the average school increased significantly - by 67.17%, and the weight of female five-year-olds - by 33.58%. This led to earlier maturation and accelerated the generational change. Considering the dynamic series of the exterior of the females according to the indices of progonism, broad-back, body girth, as well as exterior profiles, we noted that the population of the Altai mirror carp had a high growth rate, which ensured high fish productivity of reservoirs. Analysis of the variability of morphological traits from the third to the seventh generation showed that against the background of a noticeable increase in body weight, body length decreased, girth, growth and thickness increased. The body of the Altai mirror carp for five generations of breeding has become more compact, the exterior has improved.

Highlights

Genetic improvement of cultured fish plays an important role in optimizing and increasing aquaculture production [1,2,3]
That is due to the high level of heterosis in terms of the signs associated with the growth rate [13]
Selective breeding is a traditional genetic technology that permits the accumulation of genetic gain in each generation

Summary

Introduction

Genetic improvement of cultured fish plays an important role in optimizing and increasing aquaculture production [1,2,3]. Selective breeding is a traditional genetic technology that permits the accumulation of genetic gain in each generation. It is a good long-term, and often a highly cost-effective, strategy for strain improvement and domestication [1, 14]. In Russia, when breeding carp, it is believed that the stagnation of the productive properties of carp is achieved in the seventh (F7), eighth (F8) generation, while the influence of inbreeding is not observed. This is achieved by a proper breeding plan in carp populations

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